Brochure: Custom Reactivation Of Granular Activated Carbon For Drinking WaterSource: Calgon Carbon Corporation
After an activated carbon's adsorptive capacity has been exhausted, it can be returned to Calgon Carbon for thermal reactivation. In the reactivation process, the spent activated carbon is heated in furnaces devoid of oxygen using steam as a selective oxidant. The adsorbed organics are either volatilized from the activated carbon or pyrolysed to a carbon char. The volatilized organics are destroyed in the furnace's afterburner and acid gases are removed by means of a chemical scrubber. The high-temperature reaction with steam serves to restore the adsorptive capacity of the activated carbon.
Through reactivation the spent activated carbon can be recycled for reuse, eliminating the costs and long-term liability associated with disposal. The environmental benefits of a reactivated product over a virgin carbon are an efficient, cost-effective alternative, where appropriate.